High leg termination point

[dmullaney]

Concerning the point of termination for the high leg on a 4-wire, delta-connected system, does 408.3(E) also apply to an enclosed, stand-alone circuit breaker which serves as the main service disconnect (labeled as suitable for service entrance) and feeds a remotely located panelboard? Or, does 408.3(E) only refer to switchboards and panelboards? Either way the high leg is identified with orange tape as allowed in 110.15.

 

[ryan_618]

Re: High leg termination point

I would think that you meet the definition of a panelboard, in that your enclosure is a cabinet or a cutout box. With that in mind, I beleive that it needs to be landed on the "B" phase.

I wish that 230.56 and 215.8 made this more clear though.

This is just my opinion, and it very well could be a stretch. I would wait for more responses...

 

[dmullaney]

Re: High leg termination point

Ryan,
Thanks for your reply. But it does look like a streach --- the only similarities are that each has an enclosure and an automatic OCPD. Never the less, what's the difference what phase lug the high leg is connected to as long as the high leg conductor itself is identified? Don't really understand the rational behind the N.E.C. requirement for connecting the high leg only to the B phase lug as long as the high leg conductor is properly identified, do you?

 

[lrollo]

Re: High leg termination point

I know where I worked in Texas we terminated the High leg or "wild leg" as it was called there on the C phase. Since I have been in the north it seems predominately on the B phase. I feel the placement of the high leg should be defined as industry standards. Which is to say, what we all are most used to. I have run across many times where the electrician didnt mark the high leg or he did but the installation was so old the tape lost its adhesive and fell off the conductor.